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Thomas M. T. McKennan (1850–1850) - Secretary of the Interior

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Thomas McKean Thompson McKennan was born in 1794 in New Castle, Delaware, and graduated from Washington College (later Washington and Jefferson College) in Pennsylvania. McKennan then worked as a tutor in ancient languages, studied law, and was admitted to the bar in 1814.

From 1815 to 1817, McKennan served as attorney general of Washington County, Pennsylvania, before becoming a member of Washington’s town council from 1818 to 1831. In 1830, McKennan was elected to the U.S. House of Representatives, where he served three terms, from 1831 to 1839, and part of fourth term from 1842 to 1843.

President Millard Fillmore tapped McKennan in 1843 to fill the vacancy in the Interior Department left by Thomas Ewing’s resignation. McKennan served only eleven days before he resigned his duties due to illness. Little is known about Thomas McKennan’s life from his resignation in 1843 until his death in 1852.

Citation Information

Consulting Editor

Michael F. Holt

Professor Holt is the Langbourne M. Williams Professor of American History at the University of Virginia. His writings include:

The Civil War and Reconstruction (Co-authored with Jean H. Baker and David Herbert Donald, W.W. Norton, 2001)

The Rise and Fall of the American Whig Party: Jacksonian Politics and the Onset of the Civil War (Oxford University Press, 1999)

Political Parties and American Political Development from the age of Jackson to the age of Lincoln (Louisiana State University Press, 1992)